Decorative yarn



FIG. 1 is a top plan view showing my new design;

FIG. 2 is a bottom plan view;

FIG. 3 is a right side elevational view, the left side elevational view being a mirror image; and,

FIG. 4 is a perspective right end view, the left end view being a mirror image. 

The ornamental design for a decorative yarn, as shown and described. 